Can someone explain to me what this means, I can't quite understand it.

Plz which expression is equivalent to the expression below?

Acircle has a circumference of 2 pi cm. which statement about the circumference and area is true? a comparison of the area and circumference is not possible since the area cannot be determined. the numerical values of the circumference and area of the circle are equal. the numerical value of the circumference is greater than the numerical value of the area. the numerical value of the circumference is less than the numerical value of the area.

Multiply and simplify. 2x2y3z2 · 4xy4x2 how to do?